Addendums / Additions to Texas Real Estate Contract

I'm seeking guidance on my first purchase. It's a SFH. Will be bought as is with limited contingencies. Owner is in no position financially to make any repairs, therefore price will be very low. Only contingency I can think of that I need to protect myself is Title Insurance. I would also like a "get out of the deal for any reason" clause. What do I need to add to the standard TREC to protect myself? Thanks!!